return {
    "I am a student.",
    "I am not a student.",
    "I'm not a student.",
    "He is busy.",
    "He is not busy.",
    "They are neat.",
    "They are not neat.",
    "It is not new."
    "I am a not student."
    "They are not neat."
    "Frank is neat."
    "Oscar is'nt neat"
    "She is not neat.",
    "She's not neat.",
    "We are not teachers.",
    "We're not teachers.",
    "He is not a student.",
    "He isn't a student.",	
    "They are not new students.",
    "They aren't new students.",
}
